// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: wan@google.com (Zhanyong Wan)
//
// The Google C++ Testing Framework (Google Test)
//
// This header file defines the public API for Google Test.  It should be
// included by any test program that uses Google Test.
//
// IMPORTANT NOTE: Due to limitation of the C++ language, we have to
// leave some internal implementation details in this header file.
// They are clearly marked by comments like this:
//
//   // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
//
// Such code is NOT meant to be used by a user directly, and is subject
// to CHANGE WITHOUT NOTICE.  Therefore DO NOT DEPEND ON IT in a user
// program!
//
// Acknowledgment: Google Test borrowed the idea of automatic test
// registration from Barthelemy Dagenais' (barthelemy@prologique.com)
// easyUnit framework.

#ifndef GTEST_INCLUDE_GTEST_GTEST_H_
#define GTEST_INCLUDE_GTEST_GTEST_H_

#include <limits>
#include <ostream>
#include <vector>

#include "gtest/internal/gtest-internal.h"
#include "gtest/internal/gtest-string.h"
#include "gtest/gtest-death-test.h"
#include "gtest/gtest-message.h"
#include "gtest/gtest-param-test.h"
#include "gtest/gtest-printers.h"
#include "gtest/gtest_prod.h"
#include "gtest/gtest-test-part.h"
#include "gtest/gtest-typed-test.h"

// Depending on the platform, different string classes are available.
// On Linux, in addition to ::std::string, Google also makes use of
// class ::string, which has the same interface as ::std::string, but
// has a different implementation.
//
// The user can define GTEST_HAS_GLOBAL_STRING to 1 to indicate that
// ::string is available AND is a distinct type to ::std::string, or
// define it to 0 to indicate otherwise.
//
// If the user's ::std::string and ::string are the same class due to
// aliasing, he should define GTEST_HAS_GLOBAL_STRING to 0.
//
// If the user doesn't define GTEST_HAS_GLOBAL_STRING, it is defined
// heuristically.

namespace testing
{

	// Declares the flags.

	// This flag temporary enables the disabled tests.
	GTEST_DECLARE_bool_(also_run_disabled_tests);

	// This flag brings the debugger on an assertion failure.
	GTEST_DECLARE_bool_(break_on_failure);

	// This flag controls whether Google Test catches all test-thrown exceptions
	// and logs them as failures.
	GTEST_DECLARE_bool_(catch_exceptions);

	// This flag enables using colors in terminal output. Available values are
	// "yes" to enable colors, "no" (disable colors), or "auto" (the default)
	// to let Google Test decide.
	GTEST_DECLARE_string_(color);

	// This flag sets up the filter to select by name using a glob pattern
	// the tests to run. If the filter is not given all tests are executed.
	GTEST_DECLARE_string_(filter);

	// This flag causes the Google Test to list tests. None of the tests listed
	// are actually run if the flag is provided.
	GTEST_DECLARE_bool_(list_tests);

	// This flag controls whether Google Test emits a detailed XML report to a file
	// in addition to its normal textual output.
	GTEST_DECLARE_string_(output);

	// This flags control whether Google Test prints the elapsed time for each
	// test.
	GTEST_DECLARE_bool_(print_time);

	// This flag specifies the random number seed.
	GTEST_DECLARE_int32_(random_seed);

	// This flag sets how many times the tests are repeated. The default value
	// is 1. If the value is -1 the tests are repeating forever.
	GTEST_DECLARE_int32_(repeat);

	// This flag controls whether Google Test includes Google Test internal
	// stack frames in failure stack traces.
	GTEST_DECLARE_bool_(show_internal_stack_frames);

	// When this flag is specified, tests' order is randomized on every iteration.
	GTEST_DECLARE_bool_(shuffle);

	// This flag specifies the maximum number of stack frames to be
	// printed in a failure message.
	GTEST_DECLARE_int32_(stack_trace_depth);

	// When this flag is specified, a failed assertion will throw an
	// exception if exceptions are enabled, or exit the program with a
	// non-zero code otherwise.
	GTEST_DECLARE_bool_(throw_on_failure);

	// When this flag is set with a "host:port" string, on supported
	// platforms test results are streamed to the specified port on
	// the specified host machine.
	GTEST_DECLARE_string_(stream_result_to);

	// The upper limit for valid stack trace depths.
	const int kMaxStackTraceDepth = 100;

	namespace internal
	{

		class AssertHelper;
		class DefaultGlobalTestPartResultReporter;
		class ExecDeathTest;
		class NoExecDeathTest;
		class FinalSuccessChecker;
		class GTestFlagSaver;
		class StreamingListenerTest;
		class TestResultAccessor;
		class TestEventListenersAccessor;
		class TestEventRepeater;
		class UnitTestRecordPropertyTestHelper;
		class WindowsDeathTest;
		class UnitTestImpl *GetUnitTestImpl();
		void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
		                                    const std::string &message);

	}  // namespace internal

	// The friend relationship of some of these classes is cyclic.
	// If we don't forward declare them the compiler might confuse the classes
	// in friendship clauses with same named classes on the scope.
	class Test;
	class TestCase;
	class TestInfo;
	class UnitTest;

	// A class for indicating whether an assertion was successful.  When
	// the assertion wasn't successful, the AssertionResult object
	// remembers a non-empty message that describes how it failed.
	//
	// To create an instance of this class, use one of the factory functions
	// (AssertionSuccess() and AssertionFailure()).
	//
	// This class is useful for two purposes:
	//   1. Defining predicate functions to be used with Boolean test assertions
	//      EXPECT_TRUE/EXPECT_FALSE and their ASSERT_ counterparts
	//   2. Defining predicate-format functions to be
	//      used with predicate assertions (ASSERT_PRED_FORMAT*, etc).
	//
	// For example, if you define IsEven predicate:
	//
	//   testing::AssertionResult IsEven(int n) {
	//     if ((n % 2) == 0)
	//       return testing::AssertionSuccess();
	//     else
	//       return testing::AssertionFailure() << n << " is odd";
	//   }
	//
	// Then the failed expectation EXPECT_TRUE(IsEven(Fib(5)))
	// will print the message
	//
	//   Value of: IsEven(Fib(5))
	//     Actual: false (5 is odd)
	//   Expected: true
	//
	// instead of a more opaque
	//
	//   Value of: IsEven(Fib(5))
	//     Actual: false
	//   Expected: true
	//
	// in case IsEven is a simple Boolean predicate.
	//
	// If you expect your predicate to be reused and want to support informative
	// messages in EXPECT_FALSE and ASSERT_FALSE (negative assertions show up
	// about half as often as positive ones in our tests), supply messages for
	// both success and failure cases:
	//
	//   testing::AssertionResult IsEven(int n) {
	//     if ((n % 2) == 0)
	//       return testing::AssertionSuccess() << n << " is even";
	//     else
	//       return testing::AssertionFailure() << n << " is odd";
	//   }
	//
	// Then a statement EXPECT_FALSE(IsEven(Fib(6))) will print
	//
	//   Value of: IsEven(Fib(6))
	//     Actual: true (8 is even)
	//   Expected: false
	//
	// NB: Predicates that support negative Boolean assertions have reduced
	// performance in positive ones so be careful not to use them in tests
	// that have lots (tens of thousands) of positive Boolean assertions.
	//
	// To use this class with EXPECT_PRED_FORMAT assertions such as:
	//
	//   // Verifies that Foo() returns an even number.
	//   EXPECT_PRED_FORMAT1(IsEven, Foo());
	//
	// you need to define:
	//
	//   testing::AssertionResult IsEven(const char* expr, int n) {
	//     if ((n % 2) == 0)
	//       return testing::AssertionSuccess();
	//     else
	//       return testing::AssertionFailure()
	//         << "Expected: " << expr << " is even\n  Actual: it's " << n;
	//   }
	//
	// If Foo() returns 5, you will see the following message:
	//
	//   Expected: Foo() is even
	//     Actual: it's 5
	//
	class GTEST_API_ AssertionResult
	{
	public:
		// Copy constructor.
		// Used in EXPECT_TRUE/FALSE(assertion_result).
		AssertionResult(const AssertionResult &other);
		// Used in the EXPECT_TRUE/FALSE(bool_expression).
		explicit AssertionResult(bool success) : success_(success) {}

		// Returns true iff the assertion succeeded.
		operator bool() const
		{
			return success_;    // NOLINT
		}

		// Returns the assertion's negation. Used with EXPECT/ASSERT_FALSE.
		AssertionResult operator!() const;

		// Returns the text streamed into this AssertionResult. Test assertions
		// use it when they fail (i.e., the predicate's outcome doesn't match the
		// assertion's expectation). When nothing has been streamed into the
		// object, returns an empty string.
		const char *message() const
		{
			return message_.get() != NULL ?  message_->c_str() : "";
		}
		// TODO(vladl@google.com): Remove this after making sure no clients use it.
		// Deprecated; please use message() instead.
		const char *failure_message() const
		{
			return message();
		}

		// Streams a custom failure message into this object.
		template <typename T> AssertionResult &operator<<(const T &value)
		{
			AppendMessage(Message() << value);
			return *this;
		}

		// Allows streaming basic output manipulators such as endl or flush into
		// this object.
		AssertionResult &operator<<(
		    ::std::ostream & (*basic_manipulator)(::std::ostream &stream))
		{
			AppendMessage(Message() << basic_manipulator);
			return *this;
		}

	private:
		// Appends the contents of message to message_.
		void AppendMessage(const Message &a_message)
		{
			if (message_.get() == NULL)
				message_.reset(new ::std::string);
			message_->append(a_message.GetString().c_str());
		}

		// Stores result of the assertion predicate.
		bool success_;
		// Stores the message describing the condition in case the expectation
		// construct is not satisfied with the predicate's outcome.
		// Referenced via a pointer to avoid taking too much stack frame space
		// with test assertions.
		internal::scoped_ptr<::std::string> message_;

		GTEST_DISALLOW_ASSIGN_(AssertionResult);
	};

	// Makes a successful assertion result.
	GTEST_API_ AssertionResult AssertionSuccess();

	// Makes a failed assertion result.
	GTEST_API_ AssertionResult AssertionFailure();

	// Makes a failed assertion result with the given failure message.
	// Deprecated; use AssertionFailure() << msg.
	GTEST_API_ AssertionResult AssertionFailure(const Message &msg);

	// The abstract class that all tests inherit from.
	//
	// In Google Test, a unit test program contains one or many TestCases, and
	// each TestCase contains one or many Tests.
	//
	// When you define a test using the TEST macro, you don't need to
	// explicitly derive from Test - the TEST macro automatically does
	// this for you.
	//
	// The only time you derive from Test is when defining a test fixture
	// to be used a TEST_F.  For example:
	//
	//   class FooTest : public testing::Test {
	//    protected:
	//     virtual void SetUp() { ... }
	//     virtual void TearDown() { ... }
	//     ...
	//   };
	//
	//   TEST_F(FooTest, Bar) { ... }
	//   TEST_F(FooTest, Baz) { ... }
	//
	// Test is not copyable.
	class GTEST_API_ Test
	{
	public:
		friend class TestInfo;

		// Defines types for pointers to functions that set up and tear down
		// a test case.
		typedef internal::SetUpTestCaseFunc SetUpTestCaseFunc;
		typedef internal::TearDownTestCaseFunc TearDownTestCaseFunc;

		// The d'tor is virtual as we intend to inherit from Test.
		virtual ~Test();

		// Sets up the stuff shared by all tests in this test case.
		//
		// Google Test will call Foo::SetUpTestCase() before running the first
		// test in test case Foo.  Hence a sub-class can define its own
		// SetUpTestCase() method to shadow the one defined in the super
		// class.
		static void SetUpTestCase() {}

		// Tears down the stuff shared by all tests in this test case.
		//
		// Google Test will call Foo::TearDownTestCase() after running the last
		// test in test case Foo.  Hence a sub-class can define its own
		// TearDownTestCase() method to shadow the one defined in the super
		// class.
		static void TearDownTestCase() {}

		// Returns true iff the current test has a fatal failure.
		static bool HasFatalFailure();

		// Returns true iff the current test has a non-fatal failure.
		static bool HasNonfatalFailure();

		// Returns true iff the current test has a (either fatal or
		// non-fatal) failure.
		static bool HasFailure()
		{
			return HasFatalFailure() || HasNonfatalFailure();
		}

		// Logs a property for the current test, test case, or for the entire
		// invocation of the test program when used outside of the context of a
		// test case.  Only the last value for a given key is remembered.  These
		// are public static so they can be called from utility functions that are
		// not members of the test fixture.  Calls to RecordProperty made during
		// lifespan of the test (from the moment its constructor starts to the
		// moment its destructor finishes) will be output in XML as attributes of
		// the <testcase> element.  Properties recorded from fixture's
		// SetUpTestCase or TearDownTestCase are logged as attributes of the
		// corresponding <testsuite> element.  Calls to RecordProperty made in the
		// global context (before or after invocation of RUN_ALL_TESTS and from
		// SetUp/TearDown method of Environment objects registered with Google
		// Test) will be output as attributes of the <testsuites> element.
		static void RecordProperty(const std::string &key, const std::string &value);
		static void RecordProperty(const std::string &key, int value);

	protected:
		// Creates a Test object.
		Test();

		// Sets up the test fixture.
		virtual void SetUp();

		// Tears down the test fixture.
		virtual void TearDown();

	private:
		// Returns true iff the current test has the same fixture class as
		// the first test in the current test case.
		static bool HasSameFixtureClass();

		// Runs the test after the test fixture has been set up.
		//
		// A sub-class must implement this to define the test logic.
		//
		// DO NOT OVERRIDE THIS FUNCTION DIRECTLY IN A USER PROGRAM.
		// Instead, use the TEST or TEST_F macro.
		virtual void TestBody() = 0;

		// Sets up, executes, and tears down the test.
		void Run();

		// Deletes self.  We deliberately pick an unusual name for this
		// internal method to avoid clashing with names used in user TESTs.
		void DeleteSelf_()
		{
			delete this;
		}

		// Uses a GTestFlagSaver to save and restore all Google Test flags.
		const internal::GTestFlagSaver *const gtest_flag_saver_;

		// Often a user mis-spells SetUp() as Setup() and spends a long time
		// wondering why it is never called by Google Test.  The declaration of
		// the following method is solely for catching such an error at
		// compile time:
		//
		//   - The return type is deliberately chosen to be not void, so it
		//   will be a conflict if a user declares void Setup() in his test
		//   fixture.
		//
		//   - This method is private, so it will be another compiler error
		//   if a user calls it from his test fixture.
		//
		// DO NOT OVERRIDE THIS FUNCTION.
		//
		// If you see an error about overriding the following function or
		// about it being private, you have mis-spelled SetUp() as Setup().
		struct Setup_should_be_spelled_SetUp {};
		virtual Setup_should_be_spelled_SetUp *Setup()
		{
			return NULL;
		}

		// We disallow copying Tests.
		GTEST_DISALLOW_COPY_AND_ASSIGN_(Test);
	};

	typedef internal::TimeInMillis TimeInMillis;

	// A copyable object representing a user specified test property which can be
	// output as a key/value string pair.
	//
	// Don't inherit from TestProperty as its destructor is not virtual.
	class TestProperty
	{
	public:
		// C'tor.  TestProperty does NOT have a default constructor.
		// Always use this constructor (with parameters) to create a
		// TestProperty object.
		TestProperty(const std::string &a_key, const std::string &a_value) :
			key_(a_key), value_(a_value)
		{
		}

		// Gets the user supplied key.
		const char *key() const
		{
			return key_.c_str();
		}

		// Gets the user supplied value.
		const char *value() const
		{
			return value_.c_str();
		}

		// Sets a new value, overriding the one supplied in the constructor.
		void SetValue(const std::string &new_value)
		{
			value_ = new_value;
		}

	private:
		// The key supplied by the user.
		std::string key_;
		// The value supplied by the user.
		std::string value_;
	};

	// The result of a single Test.  This includes a list of
	// TestPartResults, a list of TestProperties, a count of how many
	// death tests there are in the Test, and how much time it took to run
	// the Test.
	//
	// TestResult is not copyable.
	class GTEST_API_ TestResult
	{
	public:
		// Creates an empty TestResult.
		TestResult();

		// D'tor.  Do not inherit from TestResult.
		~TestResult();

		// Gets the number of all test parts.  This is the sum of the number
		// of successful test parts and the number of failed test parts.
		int total_part_count() const;

		// Returns the number of the test properties.
		int test_property_count() const;

		// Returns true iff the test passed (i.e. no test part failed).
		bool Passed() const
		{
			return !Failed();
		}

		// Returns true iff the test failed.
		bool Failed() const;

		// Returns true iff the test fatally failed.
		bool HasFatalFailure() const;

		// Returns true iff the test has a non-fatal failure.
		bool HasNonfatalFailure() const;

		// Returns the elapsed time, in milliseconds.
		TimeInMillis elapsed_time() const
		{
			return elapsed_time_;
		}

		// Returns the i-th test part result among all the results. i can range
		// from 0 to test_property_count() - 1. If i is not in that range, aborts
		// the program.
		const TestPartResult &GetTestPartResult(int i) const;

		// Returns the i-th test property. i can range from 0 to
		// test_property_count() - 1. If i is not in that range, aborts the
		// program.
		const TestProperty &GetTestProperty(int i) const;

	private:
		friend class TestInfo;
		friend class TestCase;
		friend class UnitTest;
		friend class internal::DefaultGlobalTestPartResultReporter;
		friend class internal::ExecDeathTest;
		friend class internal::TestResultAccessor;
		friend class internal::UnitTestImpl;
		friend class internal::WindowsDeathTest;

		// Gets the vector of TestPartResults.
		const std::vector<TestPartResult> &test_part_results() const
		{
			return test_part_results_;
		}

		// Gets the vector of TestProperties.
		const std::vector<TestProperty> &test_properties() const
		{
			return test_properties_;
		}

		// Sets the elapsed time.
		void set_elapsed_time(TimeInMillis elapsed)
		{
			elapsed_time_ = elapsed;
		}

		// Adds a test property to the list. The property is validated and may add
		// a non-fatal failure if invalid (e.g., if it conflicts with reserved
		// key names). If a property is already recorded for the same key, the
		// value will be updated, rather than storing multiple values for the same
		// key.  xml_element specifies the element for which the property is being
		// recorded and is used for validation.
		void RecordProperty(const std::string &xml_element,
		                    const TestProperty &test_property);

		// Adds a failure if the key is a reserved attribute of Google Test
		// testcase tags.  Returns true if the property is valid.
		// TODO(russr): Validate attribute names are legal and human readable.
		static bool ValidateTestProperty(const std::string &xml_element,
		                                 const TestProperty &test_property);

		// Adds a test part result to the list.
		void AddTestPartResult(const TestPartResult &test_part_result);

		// Returns the death test count.
		int death_test_count() const
		{
			return death_test_count_;
		}

		// Increments the death test count, returning the new count.
		int increment_death_test_count()
		{
			return ++death_test_count_;
		}

		// Clears the test part results.
		void ClearTestPartResults();

		// Clears the object.
		void Clear();

		// Protects mutable state of the property vector and of owned
		// properties, whose values may be updated.
		internal::Mutex test_properites_mutex_;

		// The vector of TestPartResults
		std::vector<TestPartResult> test_part_results_;
		// The vector of TestProperties
		std::vector<TestProperty> test_properties_;
		// Running count of death tests.
		int death_test_count_;
		// The elapsed time, in milliseconds.
		TimeInMillis elapsed_time_;

		// We disallow copying TestResult.
		GTEST_DISALLOW_COPY_AND_ASSIGN_(TestResult);
	};  // class TestResult

	// A TestInfo object stores the following information about a test:
	//
	//   Test case name
	//   Test name
	//   Whether the test should be run
	//   A function pointer that creates the test object when invoked
	//   Test result
	//
	// The constructor of TestInfo registers itself with the UnitTest
	// singleton such that the RUN_ALL_TESTS() macro knows which tests to
	// run.
	class GTEST_API_ TestInfo
	{
	public:
		// Destructs a TestInfo object.  This function is not virtual, so
		// don't inherit from TestInfo.
		~TestInfo();

		// Returns the test case name.
		const char *test_case_name() const
		{
			return test_case_name_.c_str();
		}

		// Returns the test name.
		const char *name() const
		{
			return name_.c_str();
		}

		// Returns the name of the parameter type, or NULL if this is not a typed
		// or a type-parameterized test.
		const char *type_param() const
		{
			if (type_param_.get() != NULL)
				return type_param_->c_str();
			return NULL;
		}

		// Returns the text representation of the value parameter, or NULL if this
		// is not a value-parameterized test.
		const char *value_param() const
		{
			if (value_param_.get() != NULL)
				return value_param_->c_str();
			return NULL;
		}

		// Returns true if this test should run, that is if the test is not
		// disabled (or it is disabled but the also_run_disabled_tests flag has
		// been specified) and its full name matches the user-specified filter.
		//
		// Google Test allows the user to filter the tests by their full names.
		// The full name of a test Bar in test case Foo is defined as
		// "Foo.Bar".  Only the tests that match the filter will run.
		//
		// A filter is a colon-separated list of glob (not regex) patterns,
		// optionally followed by a '-' and a colon-separated list of
		// negative patterns (tests to exclude).  A test is run if it
		// matches one of the positive patterns and does not match any of
		// the negative patterns.
		//
		// For example, *A*:Foo.* is a filter that matches any string that
		// contains the character 'A' or starts with "Foo.".
		bool should_run() const
		{
			return should_run_;
		}

		// Returns true iff this test will appear in the XML report.
		bool is_reportable() const
		{
			// For now, the XML report includes all tests matching the filter.
			// In the future, we may trim tests that are excluded because of
			// sharding.
			return matches_filter_;
		}

		// Returns the result of the test.
		const TestResult *result() const
		{
			return &result_;
		}

	private:
#if GTEST_HAS_DEATH_TEST
		friend class internal::DefaultDeathTestFactory;
#endif  // GTEST_HAS_DEATH_TEST
		friend class Test;
		friend class TestCase;
		friend class internal::UnitTestImpl;
		friend class internal::StreamingListenerTest;
		friend TestInfo *internal::MakeAndRegisterTestInfo(
		    const char *test_case_name,
		    const char *name,
		    const char *type_param,
		    const char *value_param,
		    internal::TypeId fixture_class_id,
		    Test::SetUpTestCaseFunc set_up_tc,
		    Test::TearDownTestCaseFunc tear_down_tc,
		    internal::TestFactoryBase *factory);

		// Constructs a TestInfo object. The newly constructed instance assumes
		// ownership of the factory object.
		TestInfo(const std::string &test_case_name,
		         const std::string &name,
		         const char *a_type_param,   // NULL if not a type-parameterized test
		         const char *a_value_param,  // NULL if not a value-parameterized test
		         internal::TypeId fixture_class_id,
		         internal::TestFactoryBase *factory);

		// Increments the number of death tests encountered in this test so
		// far.
		int increment_death_test_count()
		{
			return result_.increment_death_test_count();
		}

		// Creates the test object, runs it, records its result, and then
		// deletes it.
		void Run();

		static void ClearTestResult(TestInfo *test_info)
		{
			test_info->result_.Clear();
		}

		// These fields are immutable properties of the test.
		const std::string test_case_name_;     // Test case name
		const std::string name_;               // Test name
		// Name of the parameter type, or NULL if this is not a typed or a
		// type-parameterized test.
		const internal::scoped_ptr<const ::std::string> type_param_;
		// Text representation of the value parameter, or NULL if this is not a
		// value-parameterized test.
		const internal::scoped_ptr<const ::std::string> value_param_;
		const internal::TypeId fixture_class_id_;   // ID of the test fixture class
		bool should_run_;                 // True iff this test should run
		bool is_disabled_;                // True iff this test is disabled
		bool matches_filter_;             // True if this test matches the
		// user-specified filter.
		internal::TestFactoryBase *const factory_;  // The factory that creates
		// the test object

		// This field is mutable and needs to be reset before running the
		// test for the second time.
		TestResult result_;

		GTEST_DISALLOW_COPY_AND_ASSIGN_(TestInfo);
	};

	// A test case, which consists of a vector of TestInfos.
	//
	// TestCase is not copyable.
	class GTEST_API_ TestCase
	{
	public:
		// Creates a TestCase with the given name.
		//
		// TestCase does NOT have a default constructor.  Always use this
		// constructor to create a TestCase object.
		//
		// Arguments:
		//
		//   name:         name of the test case
		//   a_type_param: the name of the test's type parameter, or NULL if
		//                 this is not a type-parameterized test.
		//   set_up_tc:    pointer to the function that sets up the test case
		//   tear_down_tc: pointer to the function that tears down the test case
		TestCase(const char *name, const char *a_type_param,
		         Test::SetUpTestCaseFunc set_up_tc,
		         Test::TearDownTestCaseFunc tear_down_tc);

		// Destructor of TestCase.
		virtual ~TestCase();

		// Gets the name of the TestCase.
		const char *name() const
		{
			return name_.c_str();
		}

		// Returns the name of the parameter type, or NULL if this is not a
		// type-parameterized test case.
		const char *type_param() const
		{
			if (type_param_.get() != NULL)
				return type_param_->c_str();
			return NULL;
		}

		// Returns true if any test in this test case should run.
		bool should_run() const
		{
			return should_run_;
		}

		// Gets the number of successful tests in this test case.
		int successful_test_count() const;

		// Gets the number of failed tests in this test case.
		int failed_test_count() const;

		// Gets the number of disabled tests that will be reported in the XML report.
		int reportable_disabled_test_count() const;

		// Gets the number of disabled tests in this test case.
		int disabled_test_count() const;

		// Gets the number of tests to be printed in the XML report.
		int reportable_test_count() const;

		// Get the number of tests in this test case that should run.
		int test_to_run_count() const;

		// Gets the number of all tests in this test case.
		int total_test_count() const;

		// Returns true iff the test case passed.
		bool Passed() const
		{
			return !Failed();
		}

		// Returns true iff the test case failed.
		bool Failed() const
		{
			return failed_test_count() > 0;
		}

		// Returns the elapsed time, in milliseconds.
		TimeInMillis elapsed_time() const
		{
			return elapsed_time_;
		}

		// Returns the i-th test among all the tests. i can range from 0 to
		// total_test_count() - 1. If i is not in that range, returns NULL.
		const TestInfo *GetTestInfo(int i) const;

		// Returns the TestResult that holds test properties recorded during
		// execution of SetUpTestCase and TearDownTestCase.
		const TestResult &ad_hoc_test_result() const
		{
			return ad_hoc_test_result_;
		}

	private:
		friend class Test;
		friend class internal::UnitTestImpl;

		// Gets the (mutable) vector of TestInfos in this TestCase.
		std::vector<TestInfo *> &test_info_list()
		{
			return test_info_list_;
		}

		// Gets the (immutable) vector of TestInfos in this TestCase.
		const std::vector<TestInfo *> &test_info_list() const
		{
			return test_info_list_;
		}

		// Returns the i-th test among all the tests. i can range from 0 to
		// total_test_count() - 1. If i is not in that range, returns NULL.
		TestInfo *GetMutableTestInfo(int i);

		// Sets the should_run member.
		void set_should_run(bool should)
		{
			should_run_ = should;
		}

		// Adds a TestInfo to this test case.  Will delete the TestInfo upon
		// destruction of the TestCase object.
		void AddTestInfo(TestInfo *test_info);

		// Clears the results of all tests in this test case.
		void ClearResult();

		// Clears the results of all tests in the given test case.
		static void ClearTestCaseResult(TestCase *test_case)
		{
			test_case->ClearResult();
		}

		// Runs every test in this TestCase.
		void Run();

		// Runs SetUpTestCase() for this TestCase.  This wrapper is needed
		// for catching exceptions thrown from SetUpTestCase().
		void RunSetUpTestCase()
		{
			(*set_up_tc_)();
		}

		// Runs TearDownTestCase() for this TestCase.  This wrapper is
		// needed for catching exceptions thrown from TearDownTestCase().
		void RunTearDownTestCase()
		{
			(*tear_down_tc_)();
		}

		// Returns true iff test passed.
		static bool TestPassed(const TestInfo *test_info)
		{
			return test_info->should_run() && test_info->result()->Passed();
		}

		// Returns true iff test failed.
		static bool TestFailed(const TestInfo *test_info)
		{
			return test_info->should_run() && test_info->result()->Failed();
		}

		// Returns true iff the test is disabled and will be reported in the XML
		// report.
		static bool TestReportableDisabled(const TestInfo *test_info)
		{
			return test_info->is_reportable() && test_info->is_disabled_;
		}

		// Returns true iff test is disabled.
		static bool TestDisabled(const TestInfo *test_info)
		{
			return test_info->is_disabled_;
		}

		// Returns true iff this test will appear in the XML report.
		static bool TestReportable(const TestInfo *test_info)
		{
			return test_info->is_reportable();
		}

		// Returns true if the given test should run.
		static bool ShouldRunTest(const TestInfo *test_info)
		{
			return test_info->should_run();
		}

		// Shuffles the tests in this test case.
		void ShuffleTests(internal::Random *random);

		// Restores the test order to before the first shuffle.
		void UnshuffleTests();

		// Name of the test case.
		std::string name_;
		// Name of the parameter type, or NULL if this is not a typed or a
		// type-parameterized test.
		const internal::scoped_ptr<const ::std::string> type_param_;
		// The vector of TestInfos in their original order.  It owns the
		// elements in the vector.
		std::vector<TestInfo *> test_info_list_;
		// Provides a level of indirection for the test list to allow easy
		// shuffling and restoring the test order.  The i-th element in this
		// vector is the index of the i-th test in the shuffled test list.
		std::vector<int> test_indices_;
		// Pointer to the function that sets up the test case.
		Test::SetUpTestCaseFunc set_up_tc_;
		// Pointer to the function that tears down the test case.
		Test::TearDownTestCaseFunc tear_down_tc_;
		// True iff any test in this test case should run.
		bool should_run_;
		// Elapsed time, in milliseconds.
		TimeInMillis elapsed_time_;
		// Holds test properties recorded during execution of SetUpTestCase and
		// TearDownTestCase.
		TestResult ad_hoc_test_result_;

		// We disallow copying TestCases.
		GTEST_DISALLOW_COPY_AND_ASSIGN_(TestCase);
	};

	// An Environment object is capable of setting up and tearing down an
	// environment.  The user should subclass this to define his own
	// environment(s).
	//
	// An Environment object does the set-up and tear-down in virtual
	// methods SetUp() and TearDown() instead of the constructor and the
	// destructor, as:
	//
	//   1. You cannot safely throw from a destructor.  This is a problem
	//      as in some cases Google Test is used where exceptions are enabled, and
	//      we may want to implement ASSERT_* using exceptions where they are
	//      available.
	//   2. You cannot use ASSERT_* directly in a constructor or
	//      destructor.
	class Environment
	{
	public:
		// The d'tor is virtual as we need to subclass Environment.
		virtual ~Environment() {}

		// Override this to define how to set up the environment.
		virtual void SetUp() {}

		// Override this to define how to tear down the environment.
		virtual void TearDown() {}
	private:
		// If you see an error about overriding the following function or
		// about it being private, you have mis-spelled SetUp() as Setup().
		struct Setup_should_be_spelled_SetUp {};
		virtual Setup_should_be_spelled_SetUp *Setup()
		{
			return NULL;
		}
	};

	// The interface for tracing execution of tests. The methods are organized in
	// the order the corresponding events are fired.
	class TestEventListener
	{
	public:
		virtual ~TestEventListener() {}

		// Fired before any test activity starts.
		virtual void OnTestProgramStart(const UnitTest &unit_test) = 0;

		// Fired before each iteration of tests starts.  There may be more than
		// one iteration if GTEST_FLAG(repeat) is set. iteration is the iteration
		// index, starting from 0.
		virtual void OnTestIterationStart(const UnitTest &unit_test,
		                                  int iteration) = 0;

		// Fired before environment set-up for each iteration of tests starts.
		virtual void OnEnvironmentsSetUpStart(const UnitTest &unit_test) = 0;

		// Fired after environment set-up for each iteration of tests ends.
		virtual void OnEnvironmentsSetUpEnd(const UnitTest &unit_test) = 0;

		// Fired before the test case starts.
		virtual void OnTestCaseStart(const TestCase &test_case) = 0;

		// Fired before the test starts.
		virtual void OnTestStart(const TestInfo &test_info) = 0;

		// Fired after a failed assertion or a SUCCEED() invocation.
		virtual void OnTestPartResult(const TestPartResult &test_part_result) = 0;

		// Fired after the test ends.
		virtual void OnTestEnd(const TestInfo &test_info) = 0;

		// Fired after the test case ends.
		virtual void OnTestCaseEnd(const TestCase &test_case) = 0;

		// Fired before environment tear-down for each iteration of tests starts.
		virtual void OnEnvironmentsTearDownStart(const UnitTest &unit_test) = 0;

		// Fired after environment tear-down for each iteration of tests ends.
		virtual void OnEnvironmentsTearDownEnd(const UnitTest &unit_test) = 0;

		// Fired after each iteration of tests finishes.
		virtual void OnTestIterationEnd(const UnitTest &unit_test,
		                                int iteration) = 0;

		// Fired after all test activities have ended.
		virtual void OnTestProgramEnd(const UnitTest &unit_test) = 0;
	};

	// The convenience class for users who need to override just one or two
	// methods and are not concerned that a possible change to a signature of
	// the methods they override will not be caught during the build.  For
	// comments about each method please see the definition of TestEventListener
	// above.
	class EmptyTestEventListener : public TestEventListener
	{
	public:
		virtual void OnTestProgramStart(const UnitTest & /*unit_test*/) {}
		virtual void OnTestIterationStart(const UnitTest & /*unit_test*/,
		                                  int /*iteration*/) {}
		virtual void OnEnvironmentsSetUpStart(const UnitTest & /*unit_test*/) {}
		virtual void OnEnvironmentsSetUpEnd(const UnitTest & /*unit_test*/) {}
		virtual void OnTestCaseStart(const TestCase & /*test_case*/) {}
		virtual void OnTestStart(const TestInfo & /*test_info*/) {}
		virtual void OnTestPartResult(const TestPartResult & /*test_part_result*/) {}
		virtual void OnTestEnd(const TestInfo & /*test_info*/) {}
		virtual void OnTestCaseEnd(const TestCase & /*test_case*/) {}
		virtual void OnEnvironmentsTearDownStart(const UnitTest & /*unit_test*/) {}
		virtual void OnEnvironmentsTearDownEnd(const UnitTest & /*unit_test*/) {}
		virtual void OnTestIterationEnd(const UnitTest & /*unit_test*/,
		                                int /*iteration*/) {}
		virtual void OnTestProgramEnd(const UnitTest & /*unit_test*/) {}
	};

	// TestEventListeners lets users add listeners to track events in Google Test.
	class GTEST_API_ TestEventListeners
	{
	public:
		TestEventListeners();
		~TestEventListeners();

		// Appends an event listener to the end of the list. Google Test assumes
		// the ownership of the listener (i.e. it will delete the listener when
		// the test program finishes).
		void Append(TestEventListener *listener);

		// Removes the given event listener from the list and returns it.  It then
		// becomes the caller's responsibility to delete the listener. Returns
		// NULL if the listener is not found in the list.
		TestEventListener *Release(TestEventListener *listener);

		// Returns the standard listener responsible for the default console
		// output.  Can be removed from the listeners list to shut down default
		// console output.  Note that removing this object from the listener list
		// with Release transfers its ownership to the caller and makes this
		// function return NULL the next time.
		TestEventListener *default_result_printer() const
		{
			return default_result_printer_;
		}

		// Returns the standard listener responsible for the default XML output
		// controlled by the --gtest_output=xml flag.  Can be removed from the
		// listeners list by users who want to shut down the default XML output
		// controlled by this flag and substitute it with custom one.  Note that
		// removing this object from the listener list with Release transfers its
		// ownership to the caller and makes this function return NULL the next
		// time.
		TestEventListener *default_xml_generator() const
		{
			return default_xml_generator_;
		}

	private:
		friend class TestCase;
		friend class TestInfo;
		friend class internal::DefaultGlobalTestPartResultReporter;
		friend class internal::NoExecDeathTest;
		friend class internal::TestEventListenersAccessor;
		friend class internal::UnitTestImpl;

		// Returns repeater that broadcasts the TestEventListener events to all
		// subscribers.
		TestEventListener *repeater();

		// Sets the default_result_printer attribute to the provided listener.
		// The listener is also added to the listener list and previous
		// default_result_printer is removed from it and deleted. The listener can
		// also be NULL in which case it will not be added to the list. Does
		// nothing if the previous and the current listener objects are the same.
		void SetDefaultResultPrinter(TestEventListener *listener);

		// Sets the default_xml_generator attribute to the provided listener.  The
		// listener is also added to the listener list and previous
		// default_xml_generator is removed from it and deleted. The listener can
		// also be NULL in which case it will not be added to the list. Does
		// nothing if the previous and the current listener objects are the same.
		void SetDefaultXmlGenerator(TestEventListener *listener);

		// Controls whether events will be forwarded by the repeater to the
		// listeners in the list.
		bool EventForwardingEnabled() const;
		void SuppressEventForwarding();

		// The actual list of listeners.
		internal::TestEventRepeater *repeater_;
		// Listener responsible for the standard result output.
		TestEventListener *default_result_printer_;
		// Listener responsible for the creation of the XML output file.
		TestEventListener *default_xml_generator_;

		// We disallow copying TestEventListeners.
		GTEST_DISALLOW_COPY_AND_ASSIGN_(TestEventListeners);
	};

	// A UnitTest consists of a vector of TestCases.
	//
	// This is a singleton class.  The only instance of UnitTest is
	// created when UnitTest::GetInstance() is first called.  This
	// instance is never deleted.
	//
	// UnitTest is not copyable.
	//
	// This class is thread-safe as long as the methods are called
	// according to their specification.
	class GTEST_API_ UnitTest
	{
	public:
		// Gets the singleton UnitTest object.  The first time this method
		// is called, a UnitTest object is constructed and returned.
		// Consecutive calls will return the same object.
		static UnitTest *GetInstance();

		// Runs all tests in this UnitTest object and prints the result.
		// Returns 0 if successful, or 1 otherwise.
		//
		// This method can only be called from the main thread.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		int Run() GTEST_MUST_USE_RESULT_;

		// Returns the working directory when the first TEST() or TEST_F()
		// was executed.  The UnitTest object owns the string.
		const char *original_working_dir() const;

		// Returns the TestCase object for the test that's currently running,
		// or NULL if no test is running.
		const TestCase *current_test_case() const
		GTEST_LOCK_EXCLUDED_(mutex_);

		// Returns the TestInfo object for the test that's currently running,
		// or NULL if no test is running.
		const TestInfo *current_test_info() const
		GTEST_LOCK_EXCLUDED_(mutex_);

		// Returns the random seed used at the start of the current test run.
		int random_seed() const;

#if GTEST_HAS_PARAM_TEST
		// Returns the ParameterizedTestCaseRegistry object used to keep track of
		// value-parameterized tests and instantiate and register them.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		internal::ParameterizedTestCaseRegistry &parameterized_test_registry()
		GTEST_LOCK_EXCLUDED_(mutex_);
#endif  // GTEST_HAS_PARAM_TEST

		// Gets the number of successful test cases.
		int successful_test_case_count() const;

		// Gets the number of failed test cases.
		int failed_test_case_count() const;

		// Gets the number of all test cases.
		int total_test_case_count() const;

		// Gets the number of all test cases that contain at least one test
		// that should run.
		int test_case_to_run_count() const;

		// Gets the number of successful tests.
		int successful_test_count() const;

		// Gets the number of failed tests.
		int failed_test_count() const;

		// Gets the number of disabled tests that will be reported in the XML report.
		int reportable_disabled_test_count() const;

		// Gets the number of disabled tests.
		int disabled_test_count() const;

		// Gets the number of tests to be printed in the XML report.
		int reportable_test_count() const;

		// Gets the number of all tests.
		int total_test_count() const;

		// Gets the number of tests that should run.
		int test_to_run_count() const;

		// Gets the time of the test program start, in ms from the start of the
		// UNIX epoch.
		TimeInMillis start_timestamp() const;

		// Gets the elapsed time, in milliseconds.
		TimeInMillis elapsed_time() const;

		// Returns true iff the unit test passed (i.e. all test cases passed).
		bool Passed() const;

		// Returns true iff the unit test failed (i.e. some test case failed
		// or something outside of all tests failed).
		bool Failed() const;

		// Gets the i-th test case among all the test cases. i can range from 0 to
		// total_test_case_count() - 1. If i is not in that range, returns NULL.
		const TestCase *GetTestCase(int i) const;

		// Returns the TestResult containing information on test failures and
		// properties logged outside of individual test cases.
		const TestResult &ad_hoc_test_result() const;

		// Returns the list of event listeners that can be used to track events
		// inside Google Test.
		TestEventListeners &listeners();

	private:
		// Registers and returns a global test environment.  When a test
		// program is run, all global test environments will be set-up in
		// the order they were registered.  After all tests in the program
		// have finished, all global test environments will be torn-down in
		// the *reverse* order they were registered.
		//
		// The UnitTest object takes ownership of the given environment.
		//
		// This method can only be called from the main thread.
		Environment *AddEnvironment(Environment *env);

		// Adds a TestPartResult to the current TestResult object.  All
		// Google Test assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc)
		// eventually call this to report their results.  The user code
		// should use the assertion macros instead of calling this directly.
		void AddTestPartResult(TestPartResult::Type result_type,
		                       const char *file_name,
		                       int line_number,
		                       const std::string &message,
		                       const std::string &os_stack_trace)
		GTEST_LOCK_EXCLUDED_(mutex_);

		// Adds a TestProperty to the current TestResult object when invoked from
		// inside a test, to current TestCase's ad_hoc_test_result_ when invoked
		// from SetUpTestCase or TearDownTestCase, or to the global property set
		// when invoked elsewhere.  If the result already contains a property with
		// the same key, the value will be updated.
		void RecordProperty(const std::string &key, const std::string &value);

		// Gets the i-th test case among all the test cases. i can range from 0 to
		// total_test_case_count() - 1. If i is not in that range, returns NULL.
		TestCase *GetMutableTestCase(int i);

		// Accessors for the implementation object.
		internal::UnitTestImpl *impl()
		{
			return impl_;
		}
		const internal::UnitTestImpl *impl() const
		{
			return impl_;
		}

		// These classes and funcions are friends as they need to access private
		// members of UnitTest.
		friend class Test;
		friend class internal::AssertHelper;
		friend class internal::ScopedTrace;
		friend class internal::StreamingListenerTest;
		friend class internal::UnitTestRecordPropertyTestHelper;
		friend Environment *AddGlobalTestEnvironment(Environment *env);
		friend internal::UnitTestImpl *internal::GetUnitTestImpl();
		friend void internal::ReportFailureInUnknownLocation(
		    TestPartResult::Type result_type,
		    const std::string &message);

		// Creates an empty UnitTest.
		UnitTest();

		// D'tor
		virtual ~UnitTest();

		// Pushes a trace defined by SCOPED_TRACE() on to the per-thread
		// Google Test trace stack.
		void PushGTestTrace(const internal::TraceInfo &trace)
		GTEST_LOCK_EXCLUDED_(mutex_);

		// Pops a trace from the per-thread Google Test trace stack.
		void PopGTestTrace()
		GTEST_LOCK_EXCLUDED_(mutex_);

		// Protects mutable state in *impl_.  This is mutable as some const
		// methods need to lock it too.
		mutable internal::Mutex mutex_;

		// Opaque implementation object.  This field is never changed once
		// the object is constructed.  We don't mark it as const here, as
		// doing so will cause a warning in the constructor of UnitTest.
		// Mutable state in *impl_ is protected by mutex_.
		internal::UnitTestImpl *impl_;

		// We disallow copying UnitTest.
		GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTest);
	};

	// A convenient wrapper for adding an environment for the test
	// program.
	//
	// You should call this before RUN_ALL_TESTS() is called, probably in
	// main().  If you use gtest_main, you need to call this before main()
	// starts for it to take effect.  For example, you can define a global
	// variable like this:
	//
	//   testing::Environment* const foo_env =
	//       testing::AddGlobalTestEnvironment(new FooEnvironment);
	//
	// However, we strongly recommend you to write your own main() and
	// call AddGlobalTestEnvironment() there, as relying on initialization
	// of global variables makes the code harder to read and may cause
	// problems when you register multiple environments from different
	// translation units and the environments have dependencies among them
	// (remember that the compiler doesn't guarantee the order in which
	// global variables from different translation units are initialized).
	inline Environment *AddGlobalTestEnvironment(Environment *env)
	{
		return UnitTest::GetInstance()->AddEnvironment(env);
	}

	// Initializes Google Test.  This must be called before calling
	// RUN_ALL_TESTS().  In particular, it parses a command line for the
	// flags that Google Test recognizes.  Whenever a Google Test flag is
	// seen, it is removed from argv, and *argc is decremented.
	//
	// No value is returned.  Instead, the Google Test flag variables are
	// updated.
	//
	// Calling the function for the second time has no user-visible effect.
	GTEST_API_ void InitGoogleTest(int *argc, char **argv);

	// This overloaded version can be used in Windows programs compiled in
	// UNICODE mode.
	GTEST_API_ void InitGoogleTest(int *argc, wchar_t **argv);

	namespace internal
	{

		// FormatForComparison<ToPrint, OtherOperand>::Format(value) formats a
		// value of type ToPrint that is an operand of a comparison assertion
		// (e.g. ASSERT_EQ).  OtherOperand is the type of the other operand in
		// the comparison, and is used to help determine the best way to
		// format the value.  In particular, when the value is a C string
		// (char pointer) and the other operand is an STL string object, we
		// want to format the C string as a string, since we know it is
		// compared by value with the string object.  If the value is a char
		// pointer but the other operand is not an STL string object, we don't
		// know whether the pointer is supposed to point to a NUL-terminated
		// string, and thus want to print it as a pointer to be safe.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.

		// The default case.
		template <typename ToPrint, typename OtherOperand>
		class FormatForComparison
		{
		public:
			static ::std::string Format(const ToPrint &value)
			{
				return ::testing::PrintToString(value);
			}
		};

		// Array.
		template <typename ToPrint, size_t N, typename OtherOperand>
		class FormatForComparison<ToPrint[N], OtherOperand>
		{
		public:
			static ::std::string Format(const ToPrint *value)
			{
				return FormatForComparison<const ToPrint *, OtherOperand>::Format(value);
			}
		};

		// By default, print C string as pointers to be safe, as we don't know
		// whether they actually point to a NUL-terminated string.

#define GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(CharType)                \
	template <typename OtherOperand>                                      \
	class FormatForComparison<CharType*, OtherOperand> {                  \
	public:                                                              \
		static ::std::string Format(CharType* value) {                      \
			return ::testing::PrintToString(static_cast<const void*>(value)); \
		}                                                                   \
	}

		GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(char);
		GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const char);
		GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(wchar_t);
		GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const wchar_t);

#undef GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_

		// If a C string is compared with an STL string object, we know it's meant
		// to point to a NUL-terminated string, and thus can print it as a string.

#define GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(CharType, OtherStringType) \
	template <>                                                           \
	class FormatForComparison<CharType*, OtherStringType> {               \
	public:                                                              \
		static ::std::string Format(CharType* value) {                      \
			return ::testing::PrintToString(value);                           \
		}                                                                   \
	}

		GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::std::string);
		GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::std::string);

#if GTEST_HAS_GLOBAL_STRING
	GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::string);
	GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::string);
#endif

#if GTEST_HAS_GLOBAL_WSTRING
	GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::wstring);
	GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::wstring);
#endif

#if GTEST_HAS_STD_WSTRING
	GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::std::wstring);
	GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::std::wstring);
#endif

#undef GTEST_IMPL_FORMAT_C_STRING_AS_STRING_

		// Formats a comparison assertion (e.g. ASSERT_EQ, EXPECT_LT, and etc)
		// operand to be used in a failure message.  The type (but not value)
		// of the other operand may affect the format.  This allows us to
		// print a char* as a raw pointer when it is compared against another
		// char* or void*, and print it as a C string when it is compared
		// against an std::string object, for example.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		template <typename T1, typename T2>
		std::string FormatForComparisonFailureMessage(
		    const T1 &value, const T2 & /* other_operand */)
		{
			return FormatForComparison<T1, T2>::Format(value);
		}

		// The helper function for {ASSERT|EXPECT}_EQ.
		template <typename T1, typename T2>
		AssertionResult CmpHelperEQ(const char *expected_expression,
		                            const char *actual_expression,
		                            const T1 &expected,
		                            const T2 &actual)
		{
#ifdef _MSC_VER
# pragma warning(push)          // Saves the current warning state.
# pragma warning(disable:4389)  // Temporarily disables warning on
			// signed/unsigned mismatch.
#endif

			if (expected == actual)
			{
				return AssertionSuccess();
			}

#ifdef _MSC_VER
# pragma warning(pop)          // Restores the warning state.
#endif

			return EqFailure(expected_expression,
			                 actual_expression,
			                 FormatForComparisonFailureMessage(expected, actual),
			                 FormatForComparisonFailureMessage(actual, expected),
			                 false);
		}

		// With this overloaded version, we allow anonymous enums to be used
		// in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous enums
		// can be implicitly cast to BiggestInt.
		GTEST_API_ AssertionResult CmpHelperEQ(const char *expected_expression,
		                                       const char *actual_expression,
		                                       BiggestInt expected,
		                                       BiggestInt actual);

		// The helper class for {ASSERT|EXPECT}_EQ.  The template argument
		// lhs_is_null_literal is true iff the first argument to ASSERT_EQ()
		// is a null pointer literal.  The following default implementation is
		// for lhs_is_null_literal being false.
		template <bool lhs_is_null_literal>
		class EqHelper
		{
		public:
			// This templatized version is for the general case.
			template <typename T1, typename T2>
			static AssertionResult Compare(const char *expected_expression,
			                               const char *actual_expression,
			                               const T1 &expected,
			                               const T2 &actual)
			{
				return CmpHelperEQ(expected_expression, actual_expression, expected,
				                   actual);
			}

			// With this overloaded version, we allow anonymous enums to be used
			// in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous
			// enums can be implicitly cast to BiggestInt.
			//
			// Even though its body looks the same as the above version, we
			// cannot merge the two, as it will make anonymous enums unhappy.
			static AssertionResult Compare(const char *expected_expression,
			                               const char *actual_expression,
			                               BiggestInt expected,
			                               BiggestInt actual)
			{
				return CmpHelperEQ(expected_expression, actual_expression, expected,
				                   actual);
			}
		};

		// This specialization is used when the first argument to ASSERT_EQ()
		// is a null pointer literal, like NULL, false, or 0.
		template <>
		class EqHelper<true>
		{
		public:
			// We define two overloaded versions of Compare().  The first
			// version will be picked when the second argument to ASSERT_EQ() is
			// NOT a pointer, e.g. ASSERT_EQ(0, AnIntFunction()) or
			// EXPECT_EQ(false, a_bool).
			template <typename T1, typename T2>
			static AssertionResult Compare(
			    const char *expected_expression,
			    const char *actual_expression,
			    const T1 &expected,
			    const T2 &actual,
			    // The following line prevents this overload from being considered if T2
			    // is not a pointer type.  We need this because ASSERT_EQ(NULL, my_ptr)
			    // expands to Compare("", "", NULL, my_ptr), which requires a conversion
			    // to match the Secret* in the other overload, which would otherwise make
			    // this template match better.
			    typename EnableIf < !is_pointer<T2>::value >::type * = 0)
			{
				return CmpHelperEQ(expected_expression, actual_expression, expected,
				                   actual);
			}

			// This version will be picked when the second argument to ASSERT_EQ() is a
			// pointer, e.g. ASSERT_EQ(NULL, a_pointer).
			template <typename T>
			static AssertionResult Compare(
			    const char *expected_expression,
			    const char *actual_expression,
			    // We used to have a second template parameter instead of Secret*.  That
			    // template parameter would deduce to 'long', making this a better match
			    // than the first overload even without the first overload's EnableIf.
			    // Unfortunately, gcc with -Wconversion-null warns when "passing NULL to
			    // non-pointer argument" (even a deduced integral argument), so the old
			    // implementation caused warnings in user code.
			    Secret * /* expected (NULL) */,
			    T *actual)
			{
				// We already know that 'expected' is a null pointer.
				return CmpHelperEQ(expected_expression, actual_expression,
				                   static_cast<T *>(NULL), actual);
			}
		};

		// A macro for implementing the helper functions needed to implement
		// ASSERT_?? and EXPECT_??.  It is here just to avoid copy-and-paste
		// of similar code.
		//
		// For each templatized helper function, we also define an overloaded
		// version for BiggestInt in order to reduce code bloat and allow
		// anonymous enums to be used with {ASSERT|EXPECT}_?? when compiled
		// with gcc 4.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
#define GTEST_IMPL_CMP_HELPER_(op_name, op)\
	template <typename T1, typename T2>\
	AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \
	                                   const T1& val1, const T2& val2) {\
		if (val1 op val2) {\
			return AssertionSuccess();\
		} else {\
			return AssertionFailure() \
			       << "Expected: (" << expr1 << ") " #op " (" << expr2\
			       << "), actual: " << FormatForComparisonFailureMessage(val1, val2)\
			       << " vs " << FormatForComparisonFailureMessage(val2, val1);\
		}\
	}\
	GTEST_API_ AssertionResult CmpHelper##op_name(\
	                                              const char* expr1, const char* expr2, BiggestInt val1, BiggestInt val2)

		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.

		// Implements the helper function for {ASSERT|EXPECT}_NE
		GTEST_IMPL_CMP_HELPER_(NE, !=);
		// Implements the helper function for {ASSERT|EXPECT}_LE
		GTEST_IMPL_CMP_HELPER_(LE, <=);
		// Implements the helper function for {ASSERT|EXPECT}_LT
		GTEST_IMPL_CMP_HELPER_(LT, <);
		// Implements the helper function for {ASSERT|EXPECT}_GE
		GTEST_IMPL_CMP_HELPER_(GE, >=);
		// Implements the helper function for {ASSERT|EXPECT}_GT
		GTEST_IMPL_CMP_HELPER_(GT, >);

#undef GTEST_IMPL_CMP_HELPER_

		// The helper function for {ASSERT|EXPECT}_STREQ.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		GTEST_API_ AssertionResult CmpHelperSTREQ(const char *expected_expression,
		                                          const char *actual_expression,
		                                          const char *expected,
		                                          const char *actual);

		// The helper function for {ASSERT|EXPECT}_STRCASEEQ.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		GTEST_API_ AssertionResult CmpHelperSTRCASEEQ(const char *expected_expression,
		                                              const char *actual_expression,
		                                              const char *expected,
		                                              const char *actual);

		// The helper function for {ASSERT|EXPECT}_STRNE.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		GTEST_API_ AssertionResult CmpHelperSTRNE(const char *s1_expression,
		                                          const char *s2_expression,
		                                          const char *s1,
		                                          const char *s2);

		// The helper function for {ASSERT|EXPECT}_STRCASENE.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		GTEST_API_ AssertionResult CmpHelperSTRCASENE(const char *s1_expression,
		                                              const char *s2_expression,
		                                              const char *s1,
		                                              const char *s2);


		// Helper function for *_STREQ on wide strings.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		GTEST_API_ AssertionResult CmpHelperSTREQ(const char *expected_expression,
		                                          const char *actual_expression,
		                                          const wchar_t *expected,
		                                          const wchar_t *actual);

		// Helper function for *_STRNE on wide strings.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		GTEST_API_ AssertionResult CmpHelperSTRNE(const char *s1_expression,
		                                          const char *s2_expression,
		                                          const wchar_t *s1,
		                                          const wchar_t *s2);

	}  // namespace internal

	// IsSubstring() and IsNotSubstring() are intended to be used as the
	// first argument to {EXPECT,ASSERT}_PRED_FORMAT2(), not by
	// themselves.  They check whether needle is a substring of haystack
	// (NULL is considered a substring of itself only), and return an
	// appropriate error message when they fail.
	//
	// The {needle,haystack}_expr arguments are the stringified
	// expressions that generated the two real arguments.
	GTEST_API_ AssertionResult IsSubstring(
	    const char *needle_expr, const char *haystack_expr,
	    const char *needle, const char *haystack);
	GTEST_API_ AssertionResult IsSubstring(
	    const char *needle_expr, const char *haystack_expr,
	    const wchar_t *needle, const wchar_t *haystack);
	GTEST_API_ AssertionResult IsNotSubstring(
	    const char *needle_expr, const char *haystack_expr,
	    const char *needle, const char *haystack);
	GTEST_API_ AssertionResult IsNotSubstring(
	    const char *needle_expr, const char *haystack_expr,
	    const wchar_t *needle, const wchar_t *haystack);
	GTEST_API_ AssertionResult IsSubstring(
	    const char *needle_expr, const char *haystack_expr,
	    const ::std::string &needle, const ::std::string &haystack);
	GTEST_API_ AssertionResult IsNotSubstring(
	    const char *needle_expr, const char *haystack_expr,
	    const ::std::string &needle, const ::std::string &haystack);

#if GTEST_HAS_STD_WSTRING
	GTEST_API_ AssertionResult IsSubstring(
	    const char *needle_expr, const char *haystack_expr,
	    const ::std::wstring &needle, const ::std::wstring &haystack);
	GTEST_API_ AssertionResult IsNotSubstring(
	    const char *needle_expr, const char *haystack_expr,
	    const ::std::wstring &needle, const ::std::wstring &haystack);
#endif  // GTEST_HAS_STD_WSTRING

	namespace internal
	{

		// Helper template function for comparing floating-points.
		//
		// Template parameter:
		//
		//   RawType: the raw floating-point type (either float or double)
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		template <typename RawType>
		AssertionResult CmpHelperFloatingPointEQ(const char *expected_expression,
		                                         const char *actual_expression,
		                                         RawType expected,
		                                         RawType actual)
		{
			const FloatingPoint<RawType> lhs(expected), rhs(actual);

			if (lhs.AlmostEquals(rhs))
			{
				return AssertionSuccess();
			}

			::std::stringstream expected_ss;
			expected_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
			            << expected;

			::std::stringstream actual_ss;
			actual_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
			          << actual;

			return EqFailure(expected_expression,
			                 actual_expression,
			                 StringStreamToString(&expected_ss),
			                 StringStreamToString(&actual_ss),
			                 false);
		}

		// Helper function for implementing ASSERT_NEAR.
		//
		// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
		GTEST_API_ AssertionResult DoubleNearPredFormat(const char *expr1,
		                                                const char *expr2,
		                                                const char *abs_error_expr,
		                                                double val1,
		                                                double val2,
		                                                double abs_error);

		// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
		// A class that enables one to stream messages to assertion macros
		class GTEST_API_ AssertHelper
		{
		public:
			// Constructor.
			AssertHelper(TestPartResult::Type type,
			             const char *file,
			             int line,
			             const char *message);
			~AssertHelper();

			// Message assignment is a semantic trick to enable assertion
			// streaming; see the GTEST_MESSAGE_ macro below.
			void operator=(const Message &message) const;

		private:
			// We put our data in a struct so that the size of the AssertHelper class can
			// be as small as possible.  This is important because gcc is incapable of
			// re-using stack space even for temporary variables, so every EXPECT_EQ
			// reserves stack space for another AssertHelper.
			struct AssertHelperData
			{
				AssertHelperData(TestPartResult::Type t,
				                 const char *srcfile,
				                 int line_num,
				                 const char *msg)
					: type(t), file(srcfile), line(line_num), message(msg) { }

				TestPartResult::Type const type;
				const char *const file;
				int const line;
				std::string const message;

			private:
				GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelperData);
			};

			AssertHelperData *const data_;

			GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelper);
		};

	}  // namespace internal

#if GTEST_HAS_PARAM_TEST
	// The pure interface class that all value-parameterized tests inherit from.
	// A value-parameterized class must inherit from both ::testing::Test and
	// ::testing::WithParamInterface. In most cases that just means inheriting
	// from ::testing::TestWithParam, but more complicated test hierarchies
	// may need to inherit from Test and WithParamInterface at different levels.
	//
	// This interface has support for accessing the test parameter value via
	// the GetParam() method.
	//
	// Use it with one of the parameter generator defining functions, like Range(),
	// Values(), ValuesIn(), Bool(), and Combine().
	//
	// class FooTest : public ::testing::TestWithParam<int> {
	//  protected:
	//   FooTest() {
	//     // Can use GetParam() here.
	//   }
	//   virtual ~FooTest() {
	//     // Can use GetParam() here.
	//   }
	//   virtual void SetUp() {
	//     // Can use GetParam() here.
	//   }
	//   virtual void TearDown {
	//     // Can use GetParam() here.
	//   }
	// };
	// TEST_P(FooTest, DoesBar) {
	//   // Can use GetParam() method here.
	//   Foo foo;
	//   ASSERT_TRUE(foo.DoesBar(GetParam()));
	// }
	// INSTANTIATE_TEST_CASE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));

	template <typename T>
	class WithParamInterface
	{
	public:
		typedef T ParamType;
		virtual ~WithParamInterface() {}

		// The current parameter value. Is also available in the test fixture's
		// constructor. This member function is non-static, even though it only
		// references static data, to reduce the opportunity for incorrect uses
		// like writing 'WithParamInterface<bool>::GetParam()' for a test that
		// uses a fixture whose parameter type is int.
		const ParamType &GetParam() const
		{
			GTEST_CHECK_(parameter_ != NULL)
			        << "GetParam() can only be called inside a value-parameterized test "
			        << "-- did you intend to write TEST_P instead of TEST_F?";
			return *parameter_;
		}

	private:
		// Sets parameter value. The caller is responsible for making sure the value
		// remains alive and unchanged throughout the current test.
		static void SetParam(const ParamType *parameter)
		{
			parameter_ = parameter;
		}

		// Static value used for accessing parameter during a test lifetime.
		static const ParamType *parameter_;

		// TestClass must be a subclass of WithParamInterface<T> and Test.
		template <class TestClass> friend class internal::ParameterizedTestFactory;
	};

	template <typename T>
	const T *WithParamInterface<T>::parameter_ = NULL;

	// Most value-parameterized classes can ignore the existence of
	// WithParamInterface, and can just inherit from ::testing::TestWithParam.

	template <typename T>
	class TestWithParam : public Test, public WithParamInterface<T>
	{
	};

#endif  // GTEST_HAS_PARAM_TEST

	// Macros for indicating success/failure in test code.

	// ADD_FAILURE unconditionally adds a failure to the current test.
	// SUCCEED generates a success - it doesn't automatically make the
	// current test successful, as a test is only successful when it has
	// no failure.
	//
	// EXPECT_* verifies that a certain condition is satisfied.  If not,
	// it behaves like ADD_FAILURE.  In particular:
	//
	//   EXPECT_TRUE  verifies that a Boolean condition is true.
	//   EXPECT_FALSE verifies that a Boolean condition is false.
	//
	// FAIL and ASSERT_* are similar to ADD_FAILURE and EXPECT_*, except
	// that they will also abort the current function on failure.  People
	// usually want the fail-fast behavior of FAIL and ASSERT_*, but those
	// writing data-driven tests often find themselves using ADD_FAILURE
	// and EXPECT_* more.

	// Generates a nonfatal failure with a generic message.
#define ADD_FAILURE() GTEST_NONFATAL_FAILURE_("Failed")

	// Generates a nonfatal failure at the given source file location with
	// a generic message.
#define ADD_FAILURE_AT(file, line) \
	GTEST_MESSAGE_AT_(file, line, "Failed", \
	                  ::testing::TestPartResult::kNonFatalFailure)

	// Generates a fatal failure with a generic message.
#define GTEST_FAIL() GTEST_FATAL_FAILURE_("Failed")

	// Define this macro to 1 to omit the definition of FAIL(), which is a
	// generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_FAIL
	#define FAIL() GTEST_FAIL()
#endif

	// Generates a success with a generic message.
#define GTEST_SUCCEED() GTEST_SUCCESS_("Succeeded")

	// Define this macro to 1 to omit the definition of SUCCEED(), which
	// is a generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_SUCCEED
	#define SUCCEED() GTEST_SUCCEED()
#endif

	// Macros for testing exceptions.
	//
	//    * {ASSERT|EXPECT}_THROW(statement, expected_exception):
	//         Tests that the statement throws the expected exception.
	//    * {ASSERT|EXPECT}_NO_THROW(statement):
	//         Tests that the statement doesn't throw any exception.
	//    * {ASSERT|EXPECT}_ANY_THROW(statement):
	//         Tests that the statement throws an exception.

#define EXPECT_THROW(statement, expected_exception) \
	GTEST_TEST_THROW_(statement, expected_exception, GTEST_NONFATAL_FAILURE_)
#define EXPECT_NO_THROW(statement) \
	GTEST_TEST_NO_THROW_(statement, GTEST_NONFATAL_FAILURE_)
#define EXPECT_ANY_THROW(statement) \
	GTEST_TEST_ANY_THROW_(statement, GTEST_NONFATAL_FAILURE_)
#define ASSERT_THROW(statement, expected_exception) \
	GTEST_TEST_THROW_(statement, expected_exception, GTEST_FATAL_FAILURE_)
#define ASSERT_NO_THROW(statement) \
	GTEST_TEST_NO_THROW_(statement, GTEST_FATAL_FAILURE_)
#define ASSERT_ANY_THROW(statement) \
	GTEST_TEST_ANY_THROW_(statement, GTEST_FATAL_FAILURE_)

	// Boolean assertions. Condition can be either a Boolean expression or an
	// AssertionResult. For more information on how to use AssertionResult with
	// these macros see comments on that class.
#define EXPECT_TRUE(condition) \
	GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
	                    GTEST_NONFATAL_FAILURE_)
#define EXPECT_FALSE(condition) \
	GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
	                    GTEST_NONFATAL_FAILURE_)
#define ASSERT_TRUE(condition) \
	GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
	                    GTEST_FATAL_FAILURE_)
#define ASSERT_FALSE(condition) \
	GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
	                    GTEST_FATAL_FAILURE_)

	// Includes the auto-generated header that implements a family of
	// generic predicate assertion macros.
#include "gtest/gtest_pred_impl.h"

	// Macros for testing equalities and inequalities.
	//
	//    * {ASSERT|EXPECT}_EQ(expected, actual): Tests that expected == actual
	//    * {ASSERT|EXPECT}_NE(v1, v2):           Tests that v1 != v2
	//    * {ASSERT|EXPECT}_LT(v1, v2):           Tests that v1 < v2
	//    * {ASSERT|EXPECT}_LE(v1, v2):           Tests that v1 <= v2
	//    * {ASSERT|EXPECT}_GT(v1, v2):           Tests that v1 > v2
	//    * {ASSERT|EXPECT}_GE(v1, v2):           Tests that v1 >= v2
	//
	// When they are not, Google Test prints both the tested expressions and
	// their actual values.  The values must be compatible built-in types,
	// or you will get a compiler error.  By "compatible" we mean that the
	// values can be compared by the respective operator.
	//
	// Note:
	//
	//   1. It is possible to make a user-defined type work with
	//   {ASSERT|EXPECT}_??(), but that requires overloading the
	//   comparison operators and is thus discouraged by the Google C++
	//   Usage Guide.  Therefore, you are advised to use the
	//   {ASSERT|EXPECT}_TRUE() macro to assert that two objects are
	//   equal.
	//
	//   2. The {ASSERT|EXPECT}_??() macros do pointer comparisons on
	//   pointers (in particular, C strings).  Therefore, if you use it
	//   with two C strings, you are testing how their locations in memory
	//   are related, not how their content is related.  To compare two C
	//   strings by content, use {ASSERT|EXPECT}_STR*().
	//
	//   3. {ASSERT|EXPECT}_EQ(expected, actual) is preferred to
	//   {ASSERT|EXPECT}_TRUE(expected == actual), as the former tells you
	//   what the actual value is when it fails, and similarly for the
	//   other comparisons.
	//
	//   4. Do not depend on the order in which {ASSERT|EXPECT}_??()
	//   evaluate their arguments, which is undefined.
	//
	//   5. These macros evaluate their arguments exactly once.
	//
	// Examples:
	//
	//   EXPECT_NE(5, Foo());
	//   EXPECT_EQ(NULL, a_pointer);
	//   ASSERT_LT(i, array_size);
	//   ASSERT_GT(records.size(), 0) << "There is no record left.";

#define EXPECT_EQ(expected, actual) \
	EXPECT_PRED_FORMAT2(::testing::internal:: \
	                    EqHelper<GTEST_IS_NULL_LITERAL_(expected)>::Compare, \
	                    expected, actual)
#define EXPECT_NE(expected, actual) \
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperNE, expected, actual)
#define EXPECT_LE(val1, val2) \
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
#define EXPECT_LT(val1, val2) \
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
#define EXPECT_GE(val1, val2) \
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
#define EXPECT_GT(val1, val2) \
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)

#define GTEST_ASSERT_EQ(expected, actual) \
	ASSERT_PRED_FORMAT2(::testing::internal:: \
	                    EqHelper<GTEST_IS_NULL_LITERAL_(expected)>::Compare, \
	                    expected, actual)
#define GTEST_ASSERT_NE(val1, val2) \
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
#define GTEST_ASSERT_LE(val1, val2) \
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
#define GTEST_ASSERT_LT(val1, val2) \
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
#define GTEST_ASSERT_GE(val1, val2) \
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
#define GTEST_ASSERT_GT(val1, val2) \
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)

	// Define macro GTEST_DONT_DEFINE_ASSERT_XY to 1 to omit the definition of
	// ASSERT_XY(), which clashes with some users' own code.

#if !GTEST_DONT_DEFINE_ASSERT_EQ
	#define ASSERT_EQ(val1, val2) GTEST_ASSERT_EQ(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_NE
	#define ASSERT_NE(val1, val2) GTEST_ASSERT_NE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_LE
	#define ASSERT_LE(val1, val2) GTEST_ASSERT_LE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_LT
	#define ASSERT_LT(val1, val2) GTEST_ASSERT_LT(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_GE
	#define ASSERT_GE(val1, val2) GTEST_ASSERT_GE(val1, val2)
#endif

#if !GTEST_DONT_DEFINE_ASSERT_GT
	#define ASSERT_GT(val1, val2) GTEST_ASSERT_GT(val1, val2)
#endif

	// C-string Comparisons.  All tests treat NULL and any non-NULL string
	// as different.  Two NULLs are equal.
	//
	//    * {ASSERT|EXPECT}_STREQ(s1, s2):     Tests that s1 == s2
	//    * {ASSERT|EXPECT}_STRNE(s1, s2):     Tests that s1 != s2
	//    * {ASSERT|EXPECT}_STRCASEEQ(s1, s2): Tests that s1 == s2, ignoring case
	//    * {ASSERT|EXPECT}_STRCASENE(s1, s2): Tests that s1 != s2, ignoring case
	//
	// For wide or narrow string objects, you can use the
	// {ASSERT|EXPECT}_??() macros.
	//
	// Don't depend on the order in which the arguments are evaluated,
	// which is undefined.
	//
	// These macros evaluate their arguments exactly once.

#define EXPECT_STREQ(expected, actual) \
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, expected, actual)
#define EXPECT_STRNE(s1, s2) \
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
#define EXPECT_STRCASEEQ(expected, actual) \
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, expected, actual)
#define EXPECT_STRCASENE(s1, s2)\
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)

#define ASSERT_STREQ(expected, actual) \
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, expected, actual)
#define ASSERT_STRNE(s1, s2) \
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
#define ASSERT_STRCASEEQ(expected, actual) \
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, expected, actual)
#define ASSERT_STRCASENE(s1, s2)\
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)

	// Macros for comparing floating-point numbers.
	//
	//    * {ASSERT|EXPECT}_FLOAT_EQ(expected, actual):
	//         Tests that two float values are almost equal.
	//    * {ASSERT|EXPECT}_DOUBLE_EQ(expected, actual):
	//         Tests that two double values are almost equal.
	//    * {ASSERT|EXPECT}_NEAR(v1, v2, abs_error):
	//         Tests that v1 and v2 are within the given distance to each other.
	//
	// Google Test uses ULP-based comparison to automatically pick a default
	// error bound that is appropriate for the operands.  See the
	// FloatingPoint template class in gtest-internal.h if you are
	// interested in the implementation details.

#define EXPECT_FLOAT_EQ(expected, actual)\
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
	                    expected, actual)

#define EXPECT_DOUBLE_EQ(expected, actual)\
	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
	                    expected, actual)

#define ASSERT_FLOAT_EQ(expected, actual)\
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
	                    expected, actual)

#define ASSERT_DOUBLE_EQ(expected, actual)\
	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
	                    expected, actual)

#define EXPECT_NEAR(val1, val2, abs_error)\
	EXPECT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \
	                    val1, val2, abs_error)

#define ASSERT_NEAR(val1, val2, abs_error)\
	ASSERT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \
	                    val1, val2, abs_error)

	// These predicate format functions work on floating-point values, and
	// can be used in {ASSERT|EXPECT}_PRED_FORMAT2*(), e.g.
	//
	//   EXPECT_PRED_FORMAT2(testing::DoubleLE, Foo(), 5.0);

	// Asserts that val1 is less than, or almost equal to, val2.  Fails
	// otherwise.  In particular, it fails if either val1 or val2 is NaN.
	GTEST_API_ AssertionResult FloatLE(const char *expr1, const char *expr2,
	                                   float val1, float val2);
	GTEST_API_ AssertionResult DoubleLE(const char *expr1, const char *expr2,
	                                    double val1, double val2);


#if GTEST_OS_WINDOWS

	// Macros that test for HRESULT failure and success, these are only useful
	// on Windows, and rely on Windows SDK macros and APIs to compile.
	//
	//    * {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}(expr)
	//
	// When expr unexpectedly fails or succeeds, Google Test prints the
	// expected result and the actual result with both a human-readable
	// string representation of the error, if available, as well as the
	// hex result code.
# define EXPECT_HRESULT_SUCCEEDED(expr) \
	EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))

# define ASSERT_HRESULT_SUCCEEDED(expr) \
	ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))

# define EXPECT_HRESULT_FAILED(expr) \
	EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))

# define ASSERT_HRESULT_FAILED(expr) \
	ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))

#endif  // GTEST_OS_WINDOWS

	// Macros that execute statement and check that it doesn't generate new fatal
	// failures in the current thread.
	//
	//   * {ASSERT|EXPECT}_NO_FATAL_FAILURE(statement);
	//
	// Examples:
	//
	//   EXPECT_NO_FATAL_FAILURE(Process());
	//   ASSERT_NO_FATAL_FAILURE(Process()) << "Process() failed";
	//
#define ASSERT_NO_FATAL_FAILURE(statement) \
	GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_FATAL_FAILURE_)
#define EXPECT_NO_FATAL_FAILURE(statement) \
	GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_NONFATAL_FAILURE_)

	// Causes a trace (including the source file path, the current line
	// number, and the given message) to be included in every test failure
	// message generated by code in the current scope.  The effect is
	// undone when the control leaves the current scope.
	//
	// The message argument can be anything streamable to std::ostream.
	//
	// In the implementation, we include the current line number as part
	// of the dummy variable name, thus allowing multiple SCOPED_TRACE()s
	// to appear in the same block - as long as they are on different
	// lines.
#define SCOPED_TRACE(message) \
	::testing::internal::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)(\
	                                                                             __FILE__, __LINE__, ::testing::Message() << (message))

	// Compile-time assertion for type equality.
	// StaticAssertTypeEq<type1, type2>() compiles iff type1 and type2 are
	// the same type.  The value it returns is not interesting.
	//
	// Instead of making StaticAssertTypeEq a class template, we make it a
	// function template that invokes a helper class template.  This
	// prevents a user from misusing StaticAssertTypeEq<T1, T2> by
	// defining objects of that type.
	//
	// CAVEAT:
	//
	// When used inside a method of a class template,
	// StaticAssertTypeEq<T1, T2>() is effective ONLY IF the method is
	// instantiated.  For example, given:
	//
	//   template <typename T> class Foo {
	//    public:
	//     void Bar() { testing::StaticAssertTypeEq<int, T>(); }
	//   };
	//
	// the code:
	//
	//   void Test1() { Foo<bool> foo; }
	//
	// will NOT generate a compiler error, as Foo<bool>::Bar() is never
	// actually instantiated.  Instead, you need:
	//
	//   void Test2() { Foo<bool> foo; foo.Bar(); }
	//
	// to cause a compiler error.
	template <typename T1, typename T2>
	bool StaticAssertTypeEq()
	{
		(void)internal::StaticAssertTypeEqHelper<T1, T2>();
		return true;
	}

	// Defines a test.
	//
	// The first parameter is the name of the test case, and the second
	// parameter is the name of the test within the test case.
	//
	// The convention is to end the test case name with "Test".  For
	// example, a test case for the Foo class can be named FooTest.
	//
	// The user should put his test code between braces after using this
	// macro.  Example:
	//
	//   TEST(FooTest, InitializesCorrectly) {
	//     Foo foo;
	//     EXPECT_TRUE(foo.StatusIsOK());
	//   }

	// Note that we call GetTestTypeId() instead of GetTypeId<
	// ::testing::Test>() here to get the type ID of testing::Test.  This
	// is to work around a suspected linker bug when using Google Test as
	// a framework on Mac OS X.  The bug causes GetTypeId<
	// ::testing::Test>() to return different values depending on whether
	// the call is from the Google Test framework itself or from user test
	// code.  GetTestTypeId() is guaranteed to always return the same
	// value, as it always calls GetTypeId<>() from the Google Test
	// framework.
#define GTEST_TEST(test_case_name, test_name)\
	GTEST_TEST_(test_case_name, test_name, \
	            ::testing::Test, ::testing::internal::GetTestTypeId())

	// Define this macro to 1 to omit the definition of TEST(), which
	// is a generic name and clashes with some other libraries.
#if !GTEST_DONT_DEFINE_TEST
	#define TEST(test_case_name, test_name) GTEST_TEST(test_case_name, test_name)
#endif

	// Defines a test that uses a test fixture.
	//
	// The first parameter is the name of the test fixture class, which
	// also doubles as the test case name.  The second parameter is the
	// name of the test within the test case.
	//
	// A test fixture class must be declared earlier.  The user should put
	// his test code between braces after using this macro.  Example:
	//
	//   class FooTest : public testing::Test {
	//    protected:
	//     virtual void SetUp() { b_.AddElement(3); }
	//
	//     Foo a_;
	//     Foo b_;
	//   };
	//
	//   TEST_F(FooTest, InitializesCorrectly) {
	//     EXPECT_TRUE(a_.StatusIsOK());
	//   }
	//
	//   TEST_F(FooTest, ReturnsElementCountCorrectly) {
	//     EXPECT_EQ(0, a_.size());
	//     EXPECT_EQ(1, b_.size());
	//   }

#define TEST_F(test_fixture, test_name)\
	GTEST_TEST_(test_fixture, test_name, test_fixture, \
	            ::testing::internal::GetTypeId<test_fixture>())

}  // namespace testing

// Use this function in main() to run all tests.  It returns 0 if all
// tests are successful, or 1 otherwise.
//
// RUN_ALL_TESTS() should be invoked after the command line has been
// parsed by InitGoogleTest().
//
// This function was formerly a macro; thus, it is in the global
// namespace and has an all-caps name.
int RUN_ALL_TESTS() GTEST_MUST_USE_RESULT_;

inline int RUN_ALL_TESTS()
{
	return ::testing::UnitTest::GetInstance()->Run();
}

#endif  // GTEST_INCLUDE_GTEST_GTEST_H_
